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Determination of trace amounts of selenium in pharmaceuticals

✍ Scribed by Hannah R. Klein; Robert H. King; William J. Mader

Publisher
John Wiley and Sons
Year
1969
Tongue
English
Weight
470 KB
Volume
58
Category
Article
ISSN
0022-3549

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✦ Synopsis

A quantitative method for the determination of less than 30 p.p.m. selenium in organic sulfur-containing drugs has been developed. The procedure utilizes oxygen flask combustion for decomposition of the organic matter and colorimetric measurement of selenium after reacting with 2,3-diaminonaphthalene, a specific complexing agent for selenium. At the level of 30 p.p.m., better than 90% recovery is obtained. The method is rapid, specific, and free from interferences.

Keyphrases 0 Selenium determination-trace amounts 0 Oxygen flask combustion, organic material-selenium determination 0 Colorimetric analysis-spectrophotometer 2,3-Diaminonaphthalene--color reagent

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